共查询到19条相似文献,搜索用时 531 毫秒
1.
激光二级管抽运非平面向行波环形腔单频固体激光器的设计 总被引:3,自引:1,他引:2
激光二极管抽运的单块非平面环形腔固体激光器具有结构稳固、效率高等优点,在一定的纵向磁场作用下,可形成单向行波振荡,纵向抽运时就可得到较高功率的单频输出,有广泛的应用前主。文中在详细讨论了非平面单向行波环形腔形成单频的原理基础上,研究了国际上流行的“三角形”单块非平面环形腔,并用此种腔型得到270mW的基横模单纵模1.06um激光;同时提出了所设计的非平面环形腔--“梯形环形腔”和“角锥棱镜式环形腔”。由于它们工作原理相近,统称它们为“泛三角形非平面单向行波环形腔”。 相似文献
2.
3.
4.
利用掺铒钇铝石榴石(Er:YAG)单块非平面环形腔(NPRO)激光器作为种子源,通过注入锁定技术研制了半导体抽运的Er:YAG陶瓷单频脉冲激光器。在重复频率为200Hz的条件下,获得了脉冲能量为11.45mJ、脉冲宽度为174ns的1645nm单频脉冲输出,在x和y方向上的M~2因子分别为1.45和1.42,脉冲光与种子光拍频信号的频谱半峰全宽为2.67MHz。实验表明,Er:YAG陶瓷作为增益介质在产生1.6μm激光方面具有较好的性能。此激光器可在激光雷达领域作为多普勒相干测风激光雷达和遥感激光雷达的光源。 相似文献
5.
单次通过周期极化KTiOPO4晶体和频单块非平面环形腔1064 nm与1319 nm激光产生连续单频589 nm黄光. 通过琼斯矩阵模拟计算对单块非平面Nd:YAG晶体参数进行了优化设计, 实验获得1080 mW和580 mW的连续单频1064 nm和1319 nm激光输出. 两束激光单次通过周期极化KTiOPO4晶体和频产生14.8 mW, M2=1.14的589 nm黄光, 相应的和频效率为0.9%. 研究了周期极化KTiOPO4温度对和频效率的影响, 得到其温度接收带宽为1.5℃. 通过改变1064 nm Nd:YAG晶体的温度可实现589 nm黄光波长精确对应钠原子D2a吸收谱线, 调谐精度达到0.164 pm. 相似文献
6.
7.
8.
9.
全固化非平面单频Nd:YAG环形激光器 总被引:5,自引:3,他引:2
利用Nd:YAG激光增益介质的法拉第效应,以及光束在非平面环形谐振腔中传播产生的偏振面旋转,使激光二极管泵浦的环形Nd:YAG激光器单向运转,获得单频激光输出,最大单纵模激光(1.064μm)输出为365mW,功率波动小于2%,短期频率漂移小于45MHz,并利用内腔倍频技术得到单频绿光输出,最大单纵模绿光(532nm)输出为75mW,功率波动小于4%。 相似文献
10.
近年来,利用环形行波激光腔以提高单频染料激光器的输出功率,曾经引起了人们的极大兴趣。然而,这种环形激光腔的设计是十分复杂的。它的复杂性在于,一般地必须考虑多元腔结构参数对腔内光模参数的相互影响。本文证明了高斯光束的一个特殊变换关系,同时在此基础上发展了一种分离参数的设计方法,使我们能够容易地设计适合各种要求的环形染料激光腔。 相似文献
11.
A novel monolithic ring laser with high potential for power scaling, the disk nonplanar ring oscillator, is presented. We achieved power scaling by reducing the pump-light-induced aberrations. The basic idea of our approach is to attach a thin Nd:YAG disk to an undoped nonplanar YAG ring resonator while the other side of the disk is mounted on a heat sink. First promising experiments have demonstrated a single-frequency cw output power of 1.6 W at 1.06 microm with a slope efficiency of 45%. Power scaling to several watts seems to be possible. 相似文献
12.
Experimental investigation ofd Nd:YAG monolithic nonplanar ring lasers operated at 1123 nm wavelength is presented. Stable single-frequency 1123 nm laser output has been obtained with successful suppression of the strong 1064 nm radiation. Single-frequency output power of 1.25 W is demonstrated with a pump power of 3.98 W at 808 nm, which gives a slope efficiency of 39%. The laser frequency tuning range is over 3 GHz, and the average tuning rate with temperature is -2.6 GHz/ degrees C. A strong iodine absorption line can be covered within the laser frequency tuning range. 相似文献
13.
Diode-laser pumped monolithic single-frequency non-planar ring laser has the advantages of compactness, reliability and high efficiency. But when the pump power is high enough, the thermal effect will be serious and the high-order transverse modes will appear. Therefore the single-mode output power is limited. In this paper, the mechanism of generating the high-order transverse modes in the monolithic unidirectional non-planar ring cavity is analyzed using ray tracing method. The calculated results are in agreement with the experiments. 相似文献
14.
A ring cavity configuration for a tunable cw dye laser is described. A substantial reduction of the output bandwidth of the ring laser with increase in power for unidirectional or traveling-wave operation has been demonstrated. The advantages of the ring configuration for single-frequency operation of cw dye lasers are explored. 相似文献
15.
Single-frequency master-oscillator fiber power amplifier system emitting 20 W of power 总被引:6,自引:0,他引:6
Höfer S Liem A Limpert J Zellmer H Tünnermann A Unger S Jetschke S Müller HR Freitag I 《Optics letters》2001,26(17):1326-1328
We report a master-oscillator fiber power-amplifier system consisting of a diode-pumped monolithic nonplanar ring laser as the master oscillator and a Yb-doped large-mode-area double-clad fiber as the power amplifier. The system emits up to 20.1 W of single-frequency radiation at a wavelength of 1064 nm with diffraction-limited beam quality (M(2)=1.3) . The optical emission spectrum and amplitude-noise behavior are investigated. Furthermore, the power-scaling possibilities are discussed. 相似文献
16.
Single-frequency 1319-nm laser was obtained by using a laser-diode-pumped monolithic Nd:YAG crystal with a non-planar ring oscillator (NPRO). When the NPRO laser was pumped by an 800-μm fiber coupled laser diode, the output power of the single-frequency 1319-nm laser was 220 mW, and the slope efficiency was 16%. With a 100-μm fiber coupled diode laser pumped, 99-mW single-frequency 1319-nm laser was obtained with a slope efficiency of 29%. 相似文献
17.
A monolithic 1645 nm Er:YAG nonplanar ring oscillator (NPRO) resonantly pumped by a 1532 nm fiber laser is demonstrated. For reducing the energy-transfer upconversion effect, a 0.5% doped Er:YAG nonplanar crystal was used. An up to 6.1 W single frequency laser output at 1645 nm was obtained, with a slope efficiency of 55.2% and an optical efficiency of 48.0%. The linewidth of the Er:YAG NPRO was 14.4 kHz. 相似文献
18.
We report the efficient generation of 100-W single-frequency radiation with diffraction-limited beam quality at the 1064-nm wavelength by use of a master-oscillator fiber power-amplifier system, consisting of a diode-pumped monolithic nonplanar ring laser as the master oscillator and an Yb-doped large-mode-area fiber as the power amplifier. The emission spectrum, the intensity noise behavior, and further power-scaling possibilities to the >200-W level, which are determined by the threshold of stimulated Brillouin scattering in the fiber amplifier, are discussed. 相似文献
19.
Intracavity frequency doubling of a single-mode Nd:YAG laser using a nonplanar ring cavity is demonstrated. The nonplanar ring cavity consists of a Brewster-angled Nd: YAG crystal placed in a magnetic field, a KTP crystal, and two spherical mirrors. In this design the Nd:YAG crystal acts as both a nonreciprocal polarization rotator and a partial polarizer, and the nonplanar portion of the ring cavity, which is formed by a relative twist angle between the Brewster-angled end surfaces of the crystal, serves as a reciprocal polarization rotator. Eigenpolarization theory for the cavity configuration is presented and a suitable value of the relative twist angle for unidirectional operation is estimated. A single-mode output power of 22 mW at 532 nm is obtained with a 1.2-W diode laser at 809 nm and a laser linewidth of less than 100 kHz is inferred from a beat note frequency spectrum between two identical laser systems. 相似文献